Too true Fred, that was exactly my thoughts at the time, especially as there was just hedgerows for another 1/4 mile after the camera (with no junctions or houses etc.). I can accept them outside a school or in a small village where cars (and trucks) come belting though for example, or at dangerous black spots, but clearly that was nothing to do with safety - and if the car behind me had been any closer, could have actually resulted in a minor accident because of it.